알루미늄 선박의 곡판 가공을 위한 다점 인장 성형 정보 생성 방안

초록

Recently, aluminum ships are constructed more than ever because of the environmental pollution generated by FRP (Fiber Reinforced Plastic) ships. In particular, FRP ships have been replaced by the Aluminum ships. The forming process of the curved aluminum plate has been performed only by labor works without systematic technique. Therefore, it is difficult to construct the aluminum vessel that satisfies both required propulsion performance and hull surfaces. Present study introduces a MPSF (Multi Point Stretching Forming) that is applied to deform the doubly curved surfaces in Aluminum ship construction. Residual deformation of the surface is modeled by an elasto-plastic contact phenomena while the forming process is simulated by Finite Element Analysis (FEA). Comparing the deformed shape of FEA with that of experiments, proposed forming method is also validated.